Business Insider senior editor and gadget lover Steve Kovach loves Cardboard Karyne Levy/Business Insider There are now over 2 dozen apps available for Cardboard on the Google Play store such as Tilt Brush gallery, where you can view 3D art creations plus various games, tours, and so on.

While there are more apps for Android than iPhone, there are a few Cardboard-capable iPhone apps on the App store, too.

And earlier this week Google released an updated software development kit for Cardboard, to encourage developers to write even more apps.

And Google even has a product manager for Cardbard, Andrew Nartker, who blogged about its soaring popularity. He says Cardboard has now been given away, downloaded or sold 500,000 times. "For the future: watch this space, and we're hiring," his post says.

This isn't just a joke, it's now a real thing.

Cardboard could be the perfect stocking stuffer for the tech gadget lover in you life.